diff --git a/tests/lang/eval-fail-path-slash.nix b/tests/lang/eval-fail-path-slash.nix
index 530105b3..8c2e104c 100644
--- a/tests/lang/eval-fail-path-slash.nix
+++ b/tests/lang/eval-fail-path-slash.nix
@@ -2,5 +2,5 @@
 # This restriction could be lifted sometime,
 # for example if we make '/' a path concatenation operator.
 # See https://github.com/NixOS/nix/issues/1138
-# and http://lists.science.uu.nl/pipermail/nix-dev/2016-June/020829.html
+# and https://nixos.org/nix-dev/2016-June/020829.html
 /nix/store/